Security analysis of Liu-Li digital signature scheme

Abstract

In 2008, Liu and Li proposed a digital signature scheme without using one-way hash function and message redundancy. They claimed their scheme are more efficient in computation and communication for small device. In this paper, we will point out an new attack to certain the Liu-Li scheme is insecure. Then we give an improvement, this scheme is suitable for low power computation and mobile device. © 2010 Springer-Verlag Berlin Heidelberg.